Author | Quality assessment criteria--Case–control | |||
---|---|---|---|---|
Selection | Comparability | Outcome/Exposure | Overall quality | |
Chang et al. 2012 [19] | *** | ** | *** | 8 |
Chung et al. 2008 [20] | *** | * | ** | 6 |
Hsieh et al. 2012 [23] | *** | ** | *** | 8 |
Koro et al. 2007 [24] | *** | * | ** | 6 |
Vinikoor et al. 2009 [26] | ** | * | ** | 5 |
Wong et al. 2012 [27] | *** | ** | ** | 7 |
Yang et al. 2004 [28] | *** | ** | ** | 7 |
Author | Quality assessment criteria—Cohort | |||
Selection | Comparability | Outcome/Exposure | Overall quality | |
Campbell et al. 2010 [17] | ** | ** | *** | 7 |
Carstensen et al. 2012 [18] | *** | ** | *** | 8 |
Currie et al. 2009 [21] | ** | ** | ** | 6 |
Gu et al. 2013 [22] | *** | ** | *** | 8 |
Onitilo et al. 2013 [25] | ** | ** | ** | 6 |